A.Olmecs, when they began to grow maize.
B.Maya, after they conquered the Valley of Mexico.(I PICK THIS)
C.Spanish, on the ruins of the Aztec capital.
D.Mexican government, after Mexico gained independence.

7. Which of the following best describes Mexico's economy?

A.Mexico's economy depends mainly on oil production.
B.The government tightly controls the Mexican economy.
C.NAFTA has increased trade with the U.S. and Canada. (I PICK THIS)
D.Mexican workers earn the same as their American and Canadian counterparts.